<script lang="ts" setup>
import { reactive } from 'vue'

// 根据后台需要的参数定义数据对象
const sortParams = reactive({
  sortField: '', // 排序方式
  inventory: false, // 是否有货
  onlyDiscount: false, // 特惠商品
  sortMethod: '' // 排序方式，倒序还是正序
})

const emit = defineEmits(['sort-change'])

// 改变排序
const changeSort = (sortField: string) => {
  if (sortField === 'price') {
    sortParams.sortField = sortField

    if (sortParams.sortMethod === '') {
      // 第一次点击，默认是降序
      sortParams.sortMethod = 'desc'
    } else {
      // 对排序方式进行取反
      sortParams.sortMethod = sortParams.sortMethod === 'desc' ? 'asc' : 'desc'
    }
  } else {
    if (sortParams.sortField === sortField) return
    sortParams.sortField = sortField
    sortParams.sortMethod = ''
  }

  emit('sort-change', sortParams)
}

const changeCheck = (sortField: string) => {
  console.log(sortField)
  emit('sort-change', sortParams)

  console.log(sortParams)
}
</script>

<template>
  <div class="sub-sort">
    <div class="sort">
      <a :class="{ active: sortParams.sortField === '' }" @click="changeSort('')" href="javascript:;">默认排序</a>
      <a
        :class="{ active: sortParams.sortField === 'publishTime' }"
        @click="changeSort('publishTime')"
        href="javascript:;"
      >
        最新商品
      </a>
      <a :class="{ active: sortParams.sortField === 'orderNum' }" @click="changeSort('orderNum')" href="javascript:;">
        最高人气
      </a>
      <a
        :class="{ active: sortParams.sortField === 'evaluateNum' }"
        @click="changeSort('evaluateNum')"
        href="javascript:;"
      >
        评论最多
      </a>
      <a @click="changeSort('price')" href="javascript:;">
        价格排序
        <i class="arrow up" :class="{ active: sortParams.sortField === 'price' && sortParams.sortMethod == 'asc' }" />
        <i
          class="arrow down"
          :class="{ active: sortParams.sortField === 'price' && sortParams.sortMethod == 'desc' }"
        />
      </a>
    </div>
    <div class="check">
      <XtxCheckbox @change="changeCheck" v-model="sortParams.inventory">仅显示有货商品</XtxCheckbox>
      <XtxCheckbox @change="changeCheck" v-model="sortParams.onlyDiscount">仅显示特惠商品</XtxCheckbox>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.sub-sort {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  .sort {
    display: flex;
    a {
      height: 30px;
      line-height: 28px;
      border: 1px solid #e4e4e4;
      padding: 0 20px;
      margin-right: 20px;
      color: #999;
      border-radius: 2px;
      position: relative;
      transition: all 0.3s;
      &.active {
        background: $xtxColor;
        border-color: $xtxColor;
        color: #fff;
      }
      .arrow {
        position: absolute;
        border: 5px solid transparent;
        right: 8px;
        &.up {
          top: 3px;
          border-bottom-color: #bbb;
          &.active {
            border-bottom-color: $xtxColor;
          }
        }
        &.down {
          top: 15px;
          border-top-color: #bbb;
          &.active {
            border-top-color: $xtxColor;
          }
        }
      }
    }
  }
  .check {
    .xtx-checkbox {
      margin-left: 20px;
      color: #999;
    }
  }
}
</style>
